﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Net;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using GestaltUtil;

namespace Gestalt
{
    public partial class GestaltApp : Application
    {
        protected IDictionary<string, string> parameters;
        protected string htmlId;

        protected XamlParse xamlParse;

        protected XamlParse.DelType scriptParser = delegate() { };

        public void DebugView(object o)
        {
            var val = o;
            System.Diagnostics.Debugger.Break();
        }

        public string XmlFullEndElements(string input)
        {
            return XmlUtil.XmlFullEndElements(input);
        }

        public void AddNode(UIElement e)
        {
            ((Canvas)this.RootVisual).Children.Add(e);
        }

        public object this[string name]
        {
            get
            {
                return xamlParse[name];
            }
        }

        public GestaltApp()
        {

            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;
            InitializeComponent();
        }


        private void Application_Startup(object sender, StartupEventArgs e)
        {
            this.parameters = e.InitParams;
            htmlId = parameters["id"];

            xamlParse = new XamlParse(htmlId);
            var parsedXaml = xamlParse.ParseXamlInPlace(scriptParser);
            if (parsedXaml != null) this.RootVisual = parsedXaml;
        }

        private void Application_Exit(object sender, EventArgs e)
        {

        }
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }
        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight 2 Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }
        public static void reportError(string errorMsg)
        {
            var doc = System.Windows.Browser.HtmlPage.Document;
            var div = doc.CreateElement("div");
            div.SetProperty("innerHTML", errorMsg);
            var first = doc.Body.Children[0];
            if (first is System.Windows.Browser.HtmlElement)
            {
                doc.Body.AppendChild(div, (System.Windows.Browser.HtmlElement)first);
            }
            else
            {
                doc.Body.AppendChild(div);
            }
        }


    }
}
